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What are the problems with the dispenser?

Release time: August 12, 2019 11:15:58 source: http://1xuewen.com
 Dispenser  What are the common problems of equipment?
1、 Leakage of rubber valve
This phenomenon often occurs in the future after the rubber valve is closed. 95% of this is because the diameter of the needle used is too large
 Small formed. Soon after the end of the liquid will result in the formation of the back pressure of the needle
 The phenomenon of drip is formed. If the needle is too small, it will affect the exhaust bubble action when the rubber valve starts to use. Just replace it
 A larger needle can handle this problem. The back pressure of the conical oblique needle is the least, and the liquid flow is the most smooth.
 The air in the liquid will leak after the rubber valve is closed. It is better to clean the air in the liquid in advance, or change to not
 Easy to contain bubbles of glue. Or the glue centrifugal defoamer before use. The size of the glue is not consistent: when the glue is not consistent
 The main pressure of the fluid is the pressure of the stored air. The inlet pressure regulator should be set at the ratio of
 The minimum pressure in the plant is 10 to 15 psi low. Above the pressure gauge should be used in the center of the pressure gauge
 Prevent the operating pressure between the low pressure part of the pressure gauge. The operating pressure of rubber valve should be at least 60 psi to ensure
 The glue is stable. Finally, the time of glue out should be checked. If it is less than 15 / 1000 seconds, it will be unstable. Glue delivery time
 The longer the glue, the more stable.
2、 The velocity is too slow
1. If the flow rate is too slow, the pipeline should be changed from 1 / 4 "to 3 / 8". If there is no demand, the shorter the pipeline, the better. Besides changing the pipes,
 Also change the outlet and air pressure, so as to completely accelerate the flow rate.
3、 Bubbles in fluid
Dispenser If the fluid pressure is too high and the valve opening time is too short, air may seep into the liquid. processing method
 In order to reduce the fluid pressure and use a conical oblique needle.
4、 The instant glue (quick drying glue) is blocked on the rubber valve joint and pipeline
This kind of scene is mainly due to excessive moisture or repeated use of instant glue. Make sure to use fresh instant glue
 Clean completely with aceton acetone without moisture. The air used should be dry and dry, and the air pressure and rubber valve in the factory should be ensured
 Filter should be installed between systems (if the above method still fails, nitrogen should be used).
5、 UV glue (UV curing adhesive)
Confirm the use of black lines. Do not directly add UV glue to the old UV glue of the pressure cylinder, first release the original UV glue,
 The UV glue is poured into the empty pressure cylinder. After a period of time, the UV glue in the pressure cylinder will form bubbles
 The glue is not stable.
6、 Needle
Generally speaking, needles smaller than size 20 may have air problems - dripping or sagging. Try to use larger general gold
 It is a kind of needle or conical oblique needle, which can prevent the use of winding or Teflon needle s.
7、 Cleaning of epoxy resin
The more often you wash the toluene, the better the pressure.